S2K Commerce - Products Dropdown
Actions
S2K Commerce - Order Entry
Actions
Tohatsu & Nissan Outboard Parts
Shop OEM and aftermarket Tohatsu and Nissan outboard parts for maintenance, repair, troubleshooting, and complete engine service projects. Browse marine parts by system, including cooling, fuel delivery, electrical, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Tohatsu and Nissan outboard engine parts for a wide range of 2-stroke, Four Stroke, EFI, and TLDI applications. Use your engine horsepower, model number, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Tohatsu & Nissan Outboard Parts by System
- Control Cables & Boxes
- Cooling System
- Electrical System
- Engine Oil
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service Manuals
- Steering Systems
- Transom & Midsection
- Trim System
Find the Correct Tohatsu or Nissan Outboard Part
Tohatsu and Nissan outboard parts can vary by horsepower, model number, engine family, and production range. If you are unsure which component fits your engine, use the OEM parts lookup to identify the original part number from a factory parts diagram.
Once you have the OEM part number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Tohatsu & Nissan Outboard Engine Families
Pro Marine supports many Tohatsu and Nissan outboards across a wide horsepower range. Always confirm the exact engine model and serial information before ordering parts.
- Portable and Small Outboards: common 2.5HP through 30HP 2-stroke and Four Stroke applications
- Midrange: 35HP through 70HP applications across multiple engine families
- Three-Cylinder Platforms: common 75HP through 90HP applications
- High-Horsepower: 115HP through 140HP applications
- EFI: electronically fuel-injected Tohatsu platforms
- TLDI: Tohatsu direct-injection 2-stroke engine families
Common Tohatsu & Nissan Repair Areas
- Engine overheating: inspect the water pump, impeller, thermostat, cooling passages, pressure-control components, and engine anodes.
- Hard starting or rough running: inspect fuel pumps, carburetors or injectors, filters, spark plugs, ignition components, and intake sealing.
- No spark or electrical problems: inspect ignition coils, stators, CDI components, rectifiers, sensors, wiring, and grounds.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and other internal engine components.
- Lower unit noise or water intrusion: inspect prop shaft seals, driveshaft seals, shift shaft seals, bearings, gears, and gear lube condition.
- Trim or steering problems: inspect trim motors, hydraulic components, steering systems, hoses, seals, and related rigging parts.
Why Buy Tohatsu & Nissan Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for many Tohatsu and Nissan outboard applications.
- Parts for routine maintenance, professional repair, lower units, fuel systems, electrical systems, steering, trim, and internal engine work.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of cooling, fuel, electrical, lower unit, and service components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Tohatsu or Nissan outboard part?
Start with the engine horsepower, model number, serial number, and production information whenever available. Use the OEM parts lookup to identify the original part number from a factory diagram.
Can I search Tohatsu and Nissan parts by OEM part number?
Yes. Enter the OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Tohatsu and Nissan outboard parts interchange?
Some Tohatsu and Nissan outboard applications share related engine platforms and components, but fitment should never be assumed. Confirm the model, production range, and OEM part number before ordering.
Do you carry parts for Tohatsu TLDI engines?
Yes. Pro Marine carries parts for many Tohatsu TLDI applications, including cooling, fuel, electrical, internal engine, lower unit, steering, and trim components.
Do you carry parts for older Nissan outboards?
Yes. Pro Marine carries replacement parts for many older Nissan outboard applications. Availability varies by engine family and component.
What Tohatsu and Nissan parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters where applicable, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and model-specific service components.
Fitment Tip: Tohatsu and Nissan outboard parts can vary by model, horsepower, engine family, and production range. Confirm the OEM part number or complete engine identification information whenever possible before ordering.
0173311
0303665
0387121
0777353
173311
18-8055
39729334301
777353
9-38016
0173312
0777351
173312
18-8074
39729334059
777351
9-38018
MPI Type A Marine Fuel Hose
MPI 1/4" Type A Marine Fuel Hose - Sold by the Foot
The MPI 314-1 1/4" Type A Marine Fuel Hose is bulk marine fuel line for applications requiring 1/4" inside-diameter hose and the additional fire-resistant protection of Type A marine fuel hose.
Type A hose is commonly selected for enclosed, below-deck and other marine fuel-system installations where Type A hose is required. The hose is sold by the foot, allowing you to order the continuous length needed for your installation.
Pro Marine also stocks the matching Oetiker 4-170 ear clamp, Pro Marine 8002 1/4" primer bulb, Oetiker installation tools and a 1/4" Type B alternative.
Inside Diameter: 1/4"
Manufacturer: MPI Products
Fuel Hose Type: Type A Marine Fuel Hose
Sold: By the Foot
Recommended Clamp: Oetiker 4-170
Recommended Primer Bulb: Pro Marine 8002 - 1/4"
How to Order Bulk Fuel Hose
MPI 314-1 is sold by the foot. Enter the quantity based on the continuous length of fuel hose needed for the installation.
For example, if you need 8 feet of 1/4" Type A hose, order a quantity of 8.
What is Type A Marine Fuel Hose?
Marine fuel hose classifications help identify the hose's intended application, permeation performance and fire resistance.
Type A marine fuel hose meets the applicable marine fuel-hose performance requirements as well as the additional USCG fire-test requirement associated with Type A hose.
This makes Type A hose the appropriate choice for fuel-system installations where the additional fire-resistant classification is required.
Where is Type A Fuel Hose Used?
Type A fuel hose is commonly used in enclosed and below-deck marine fuel-system installations and other locations where the fuel line must meet the Type A fire-resistant classification.
Always select marine fuel hose according to the requirements of the specific fuel-system installation rather than choosing hose based on diameter alone.
For exposed and above-deck applications where Type B marine fuel hose is permitted, Pro Marine stocks the MPI 315-014 1/4" Type B fuel hose.
View MPI 315-014 1/4" Type B Fuel Hose
Complete Your 1/4" Fuel Line Setup
Pro Marine stocks the matching clamp, primer bulb and installation tools needed to build or service a 1/4" marine fuel-line system.
Oetiker 4-170 Ear Clamp - 10 Pack
The matching Oetiker ear clamp for the MPI 314-1 1/4" Type A marine fuel hose.
Clamp: 4-170
View Oetiker 4-170 Clamp
Pro Marine 8002 - 1/4" Primer Bulb
Matching 1/4" primer bulb for compatible outboard fuel-line assemblies using 1/4" fuel hose.
Hose Size: 1/4"
View 1/4" Primer Bulb
Oetiker Standard Jaw Pincer Tool
Installation tool for properly closing Oetiker ear clamps when building or repairing marine fuel lines.
View Oetiker Pincer Tool
Oetiker Clamp Pack with Tool
Assortment of common Oetiker clamp sizes with the installation tool included. Ideal for marine shops and technicians servicing multiple fuel-line sizes.
View Oetiker Clamp Pack1/4" Type B Alternative
MPI 315-014 1/4" Type B Marine Fuel Hose
Type B alternative for exposed and above-deck fuel-line installations where Type B hose is appropriate.
Inside Diameter: 1/4"
Fuel Hose Type: Type B
Matching Clamp: Oetiker 4-133
Primer Bulb: Pro Marine 8002 - 1/4"
1/4" Type A vs. Type B Fuel Hose
| Fuel Hose | Classification | Matching Clamp | Primer Bulb |
|---|---|---|---|
| MPI 314-1 | Type A | Oetiker 4-170 | Pro Marine 8002 - 1/4" |
| MPI 315-014 | Type B | Oetiker 4-133 | Pro Marine 8002 - 1/4" |
Why Do the Type A and Type B Hoses Use Different Clamps?
Both hoses have a 1/4" inside diameter, which allows them to connect to compatible 1/4" fittings and the Pro Marine 8002 1/4" primer bulb.
However, the 1/4" measurement does not indicate the outside diameter of the hose. Different hose constructions and wall thicknesses result in different outside diameters.
The MPI 314-1 Type A hose uses Oetiker 4-170, while the MPI 315-014 Type B hose uses Oetiker 4-133. Always select the clamp for the specific hose rather than selecting it based only on inside diameter.
What This Fuel Hose is Used For
MPI 314-1 is intended for building, repairing or replacing marine fuel lines requiring 1/4" Type A fuel hose.
Selling the hose by the foot makes it suitable for custom-length installations and allows the hose to be paired with the appropriate primer bulb, fittings, connectors and clamps for the specific boat.
Building a 1/4" Type A Fuel Line
Depending on the application, a complete 1/4" fuel-line setup may include:
- MPI 314-1 1/4" Type A marine fuel hose
- Pro Marine 8002 1/4" primer bulb
- Correct tank-side fitting or connection
- Correct engine-side fitting or connector
- Oetiker 4-170 ear clamps
- Oetiker pincer installation tool
Exact component requirements depend on the engine, fuel tank and configuration of the boat's fuel system.
Primer Bulb Selection
Primer bulb fittings should match the inside diameter of the fuel hose. For 1/4" fuel line, use the Pro Marine 8002 1/4" Primer Bulb.
View Pro Marine 8002 1/4" Primer Bulb
Key Features & Benefits
- 1/4" inside diameter
- MPI Products marine fuel hose
- Type A marine fuel-hose construction
- Designed for installations requiring Type A fire resistance
- Common choice for enclosed and below-deck fuel-line routing
- Sold by the foot for custom-length installations
- Matching Oetiker 4-170 clamp available
- Matching Pro Marine 8002 1/4" primer bulb available
- 1/4" Type B alternative available
- Oetiker installation tool available
- Complete Oetiker clamp assortment with tool available
Need Help Choosing the Right Marine Fuel Hose?
Fuel-hose diameter is only one part of choosing the correct line. Installation location, Type A or Type B classification, primer bulb, fittings and the hose's outside diameter for clamp selection should all be considered.
Visit the Pro Marine Fuel Line Technical Center
FAQ
What size is MPI 314-1?
MPI 314-1 has a 1/4" inside diameter.
Is this hose sold by the foot?
Yes. Order the quantity corresponding to the total number of feet required.
What type of marine fuel hose is MPI 314-1?
MPI 314-1 is Type A marine fuel hose.
Where is Type A marine fuel hose commonly used?
Type A hose is commonly selected for enclosed and below-deck installations
and other applications requiring its additional fire-resistant
classification.
Which clamp fits MPI 314-1?
Use the
Oetiker 4-170 ear clamp
.
Which primer bulb fits this hose?
Use the
Pro Marine 8002 1/4" Primer Bulb
.
Can I use the same primer bulb with Type A and Type B 1/4" hose?
Yes. Both hoses have a 1/4" inside diameter, so the
Pro Marine 8002 1/4" primer bulb is the matching size
for either hose.
Do Type A and Type B 1/4" hoses use the same clamp?
No. MPI 314-1 Type A uses Oetiker 4-170, while MPI
315-014 Type B uses Oetiker 4-133. The hoses have the
same inside diameter but different outside diameters.
What if I need 1/4" Type B fuel hose?
Use the
MPI 315-014 1/4" Type B Marine Fuel Hose
for applications where Type B hose is appropriate.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 in the continental U.S.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help choosing the correct fuel hose?
Contact Pro Marine
Phone: 941-721-3000
Searchable Part Numbers & Terms
314-1, MPI 314-1, 1/4 Type A fuel hose, 1/4 marine fuel hose, 1/4 boat fuel line, Type A marine fuel hose, below deck fuel hose, enclosed marine fuel line, marine fuel line by the foot, bulk marine fuel hose, outboard fuel line, boat fuel hose, Oetiker 4-170, 4-170 fuel hose clamp, 8002, Pro Marine 8002, 1/4 primer bulb, marine primer bulb, outboard primer bulb, 315-014, 1/4 Type B fuel hose, Oetiker 4-133, MPI marine fuel line
